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. 2017 Mar 3;8:272. doi: 10.3389/fpls.2017.00272

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Copyright © 2017 Zhao, Wang, Zhou, Wang, Zhang, Wang, Pan and Xu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Manganese toxicity represses the expression of PIN4 and PIN7 in Arabidopsis roots. GFP fluorescence in the roots of 5-day-old PIN4:GFP (A) or PIN7:GFP (C) exposed to 4 mM MnCl₂ for 12–48 h and the quantification of PIN4:GFP (B) or PIN7:GFP (D) fluorescence intensities. (E) The relative root length of col-0, pin4-3, and pin7-2 seedlings treated with 4 mM MnCl₂ for 2 days compared with untreated seedlings. The error bars represent the ±SD. Different letters indicate significantly different values (P < 0.05 by Tukey’s test). ^∗∗P-value < 0.01.